心包的

Prior to the 17th century it was made of wood or wool in a leather cover.

球：我们试图击进洞里的圆形物体。17世纪之前，球用木头或羊毛制成。17世纪后，人们把羽毛煮沸、压缩，然后缝制在皮封面内。19世纪50年代发展成古塔胶球（或与杜仲胶其它物质的混合物），20世纪，这种球的核心包覆条状橡胶。

By using the non-instantaneous section envelope machining principle , a mathematical model of mold grinding helical-spur cylinder gear is established,which is a calculating method to shape axile sectional of grinding wheel for numerical control mold grinding helical-spur cylinder gear.

利用无瞬心包络法成形加工的原理，建立了成形磨削斜齿圆柱齿轮的一种数学模型，为斜齿圆柱齿轮数控成形磨削的砂轮轴向修形提供了一种计算方法。

There were no significant differences in bleeding events, defined as symptomatic intracerebral hemorrhage, hemopericardium, or other systemic bleeding resulting in hemodynamic instability or blood transfusions.

以有症状的大脑出血、心包积血或其他症状性出血导致的血流动力学障碍和需输血治疗定义的出血事件无显著差别。

The layer of flat cells of mesodermal origin that lines the embryonic body cavity and gives rise to the squamous cells of the peritoneum, pericardium, and pleura .

间皮起源于中胚层的扁平细胞层，衬于胚胎的原始体腔中，最终发育成腹膜、心包及胸膜的上皮细胞

Methods: The characters and clinical situation of 5 patients who suffer the acute pericardial tamponade in the cardiac intervention since 1986 in our hospital were studied.

总结我院开展介入手术以来发生的5例心包填塞特点、临床表现及术中紧急处理的经验和方法。

Methods Thoracopagus twins were admitted for evaluating possible separation and repair before surgery.X-rays, CT, MRI and ultrasound scan of torso showed separated and normal gastrointestinal, biliary tracts and heart,conjoined pleura,conjoined pericardium,connected diaphragm and liver parenchyma.

目的 通过胸腹联体双胎婴儿的分离手术提供联体婴儿外科治疗方法方法术经 X 线、CT、MRI 和 B 超等检查确诊，该联体儿肝脏相连、膈肌相连，胸膜紧贴、心包紧贴，有2 完全独立的心脏，两副消化道和胆管。

RESULTS Before pericar-dial effusion,the diastolic pressures of ventricles and pul-monary pressure pulsated with intrathoracic pressure,and pressures of carotid vein and femoral vein were stable.

通过制作狗的心包积液模型，描记积液前后胸内压、左右室舒张压、外周大静脉压及肺静脉压的呼吸性波动曲线，计算其波动值并进行统计学处理。

The feed must clean, fresh, prohibit that feeds feed which gets moldy and spoil, freezes, simultaneously must pay attention to foreign matter and so on iron wire which, glass, grit mixes with except the feed, after preventing the cattle and sheep pass the food, to have diseases and so on reticulum pericarditis.

饲料要清洁、新鲜、切忌饲喂霉变、冰冻的饲料，同时要注意除去饲料中以夹杂的铁丝、玻璃、沙石等异物，防止牛羊通食后发生网胃性心包炎等疾病。

Skeletal muscle ventricle constructed from conditioned skeletal*muscles, lined with autogenous or bovine pericardium, and connected with valved homografts between right atrium or venae cava and main pulmonary artery, has been demonstrated to be nonthrombogenic.

经耐疲劳训练的自体骨骼肌，内衬自体心包制成骨骼肌心室，并以同种带瓣主动脉吻合于右心房或上、下腔静脉与肺动脉之间来代替或辅助右心室的功能，可提高肺动脉收缩压及肺动脉血流并使之成为波动性，而且具有不需抗凝，无血栓形成等优点。

With regard to the question how to cut the helical camber of screw-pump and spiral rod drilling tool in the field of petroleum machine and chemical machine, this paper firstly puts forward the cutting method how to apply the milling with non-instantaneous-pole envelope principle with plate milling cutter in our country.

本论文针对石油、化工机械领域螺杆泵、螺杆钻具转子的螺旋曲面切削加工问题，在国内首次提出了应用盘铣刀的无瞬心包络铣削加工方法。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。